Carton or container



Filed Feb. 9, 1931 IN V EN TOR,

TORNEY Patented Dec. 6, 1932 CHARLES E. R. FULCHER, OF LOS ANGELES,CALIFORNIA CARTON OB CONTAINER Application filed February 9, 1931.Serial No. 514,532.

This invention relates to cartons and containers and more especially tothose which are made up of one piece of sheet stock; which may be of anybendable material.

An objectis to provide a container, hereinafter called the carton, whichincludes several component elements of monopiece blank and whichincludes certain foldable side walls, a base and a cover strip which,when set up as a formed carton, will be very effectively interlockedbecause of peculiar flange and tongue parts, and certain angular andpositional relation of the set up parts.

An additional object is to provide a carton structure in which certainparts are provided with compression struts greatly stiffening the cartonand being of self-interlocking action in the carton.

A notable object is to provide a carton whose several folding panelparts are characterized as self-interlocking without, and dispensingwith, various forms of tongueand-slot, or kerf, interhooking flaps orleaves, as will be made clear hereinafter. Thus pasting of the closedparts is entirely eliminated.

The invention consists in certain advancements in this art as set forthin the ensuing disclosure and having, with the above, additional objectsand advantages, and whose construction, combination and details ofmeans, and the manner of operation will be made manifest in thedescription of the herewith illustrative embodiment; it being understoodthat modifications, variations and adaptations may be resorted to withinthe scope, principle and spirit of the invention as it is more directlyclaimed hereinafter.

Figure 1 is a perspective of the closed carton.

Figure 2 is a plan of the mono-piece blank, as cut out.

Figure 3 is a detail, sectional, perspective of the cover stripinterlock relation of parts.

Figure t is a section across the closed carton from top to bottom toshow strut position and interlock.

The carton, its method of making and its blank are now more particularlyset out.

Produced from the desired stock sheet is a blank, Fig. 2, presenting abase part 2 having a clear end edge 3 and laterally joined on fold lines45 by similar panels 6-7.

ll hile these panels may vary in chosen form a special feature is thatthe included angle in the end corner a is materially less than ninetydegrees for a purpose herebelow set out.

The panels 67 are multi-sided and each side has a flange 8 foldableinward on lines 9. These flanges 8 are of a substantial width so as toafford a substantial strut-like function.

An important feature of these flanges that their end edges 10 are onsuch an angle that when the flanges are in set position Fig. 4, thatthey lie close and parallel to the base edge 3.

Adjoining the fold line 12 along the base end 13 is a strip 14:, equalin width to the base and divided into cover sections 15-16 equal innumber to the multi-edged side walls 67. The sections 1516 are foldableon con necting line 17 to bend about the salient angle 1), and the endsection has a short tongue 19 bendable inwardly on line 20 so as to hookin over the base 2, Fig. 3 and below the inturned strut flanges 8, Fig.4.

The blank cut to the shape shown and described may then be folded to boxshape the procedure being as follows: the strut flanges 8 are bent in toa right-angle to the plane of their walls 67 these are bent toright-angle to the base; the cover strip is bent up on line 12, and online 17 to fit the ridge angle 7) and the tongue 19 bent in to an angleof less than 90 to section 16.

To facilitate closing the carton one side wall, as 7, Fig. 4 is tiltedoutward and the top corners c of the struts 88 are pressed or deflecteddownward at P so as to clear the ridge of the carton. This is necessarybecause the diagonal D of the struts 8 is much greater than the heightto the ridge from base. While the side 7 is thus out-tilted the hookingtongue 19 is tucked into place between the base end 3 and the strut ends10. In this action the cover section 16 moves as a radiant part of theridge as a center. The angle a being less than 90 causes the tongueIROLFE MILLER HAYS, 015 LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TOto hook around the ends of the struts and automatically: interlockclosed. This done the side wall 7 is pushed into place and the strutflanges spring out to the ridge.

Thus the struts take compression loads on the ridge and greatly stiifenthe box, and they automatically resist opening of the side Wall byreason of their diagonal dimension 7 which causes the corner to jamagainst the v ridge fold.- V

The close proximity of the strut ends 10 to the base end 3 is highlyimportant in the interlocking of the tongue 19 since they 00- operate asholders when effort is applied to pull open the cover end. i

What is claimed is V A container consisting of a one-piece blank whichincludes a base at the sides of which areifoldable, triangular Wallpanels the outer sides of each of which has a set of foldable flangesWhose several ends near the base will, when the panels are in eliectiveposition lie parallel and close to the ends of the base, andafoldableclosure strip extending from an end z-margin of the base andcontinuing around the panels and lapping about the inwardlyfoldedflanges of said walls and having a locking-hook tongue inturnedover the near base edge and interlocking positively bemy tweenvthe baseand the near end edges of in turned flanges;the flanges: forming strutswhose ends at the corner bend of the strip lie close and parallel to thesaid bend to form an, internal support for the same. 7

ROLFE MILLER HAYS.

